Results 61 to 70 of about 184 (111)

Entropy-like functionals: conceptual background and some results [PDF]

open access: yes, 1992
summary:We describe a conceptual approach which provides a unified view of various entropy-like functionals on the class of semimetric spaces, endowed with a bounded measure.
Katětov, Miroslav
core  

Some nonmetric, first countable, cancellative topological semigroups that are generalized metric spaces

open access: yes, 1992
A first countable topological group is metrizable. Certain nonfirst countable topological groups are “generalized metric spaces”. To elucidate the latter, we briefly list some theorems and examples.
Heath, R.W.
core   +1 more source

Six mathematical gems from the history of distance geometry

open access: yes, 2017
This is a partial account of the fascinating history of distance geometry. We make no claim to completeness, but we do promise a dazzling display of beautiful, elementary mathematics.
Liberti, Leo, Lavor, Carlile
core   +1 more source

A note on a Category in Point-free Geometry

open access: yes, 2018
The notion of interval semimetric space leads to introduce a geometry whose primitive notions are regions and interval-valued maps, following the A.N. Whitehead's ideas.
MIRANDA, Annamaria
core  

On Spaces Extremal for the Gomory-Hu Inequality

open access: yes, 2015
Let (X, d) be a finite ultrametric space. In 1961 E.C. Gomory and T.C. Hu proved the inequality vertical bar Sp(X)vertical bar <= vertical bar X vertical bar where Sp(X) = {d(x, y): x, y is an element of X}.
Dovgoshey, O.   +2 more
core   +1 more source

Emergent linguistic structure in artificial neural networks trained by self-supervision. [PDF]

open access: yesProc Natl Acad Sci U S A, 2020
Manning CD   +4 more
europepmc   +1 more source

On Spaces with Quasi-Regular-$G_{delta}$-Diagonals

open access: yes, 2000
This paper studies spaces with quasi--regular--$G_{delta}$--diagonal. It is shown that if $X$ is a normal space, then the following are equivalent: begin{enumerate} item $X$ admits a development satisfying the $3$--link property.
Mohamad, A.M.
core  

A comparison of covering properties in T[lowered 3] and T[lowered 4] spaces

open access: yes, 1968
Weak and strong cover compactness are defined and compared with five other well-known covering properties in developable, semimetric, first countable, locally compact and general T[lowered 3] and T[lowered 4] spaces. In addition, it is shown that weak or
Briggs, Robert Cooke
core  

A CONTRACTION PRINCIPLE IN SEMIMETRIC SPACES [PDF]

open access: yes, 2016
a
Mihály Bessenyei   +3 more
core  

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